A multiple pregnancy is the presence of two or more fetuses growing in the uterus. A pregnancy of twins or more is considered high-risk because complications and premature birth are more common than in pregnancies of one fetus.
Primary Medical ReviewerSarah Marshall, MD - Family Medicine
Specialist Medical ReviewerWilliam Gilbert, MD - Maternal and Fetal Medicine
Current as ofNovember 14, 2014
WebMD Medical Reference from Healthwise